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Put in a generic hash table system in place of the various ad-hoc

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hash table scattered everywhere.  Except, the page hash table in
the pager is unchanged. (CVS 260)

FossilOrigin-Name: 9114420dd01d92cc8890046500a8806a297a4e65
This commit is contained in:
drh
2001-09-22 18:12:08 +00:00
parent 4aa85c42b3
commit beae319476
9 changed files with 580 additions and 270 deletions
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23
src/main.c
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@@ -14,7 +14,7 @@
** other files are for internal use by SQLite and should not be
** accessed by users of the library.
**
** $Id: main.c,v 1.39 2001/09/19 13:22:40 drh Exp $
** $Id: main.c,v 1.40 2001/09/22 18:12:10 drh Exp $
*/
#include "sqliteInt.h"
#include "os.h"
@@ -249,6 +249,8 @@ sqlite *sqlite_open(const char *zFilename, int mode, char **pzErrMsg){
db = sqliteMalloc( sizeof(sqlite) );
if( pzErrMsg ) *pzErrMsg = 0;
if( db==0 ) goto no_mem_on_open;
sqliteHashInit(&db->tblHash, SQLITE_HASH_STRING, 0);
sqliteHashInit(&db->idxHash, SQLITE_HASH_STRING, 0);
/* Open the backend database driver */
rc = sqliteBtreeOpen(zFilename, mode, MAX_PAGES, &db->pBe);
@@ -298,17 +300,16 @@ no_mem_on_open:
** changed the schema and this process needs to reread it.
*/
static void clearHashTable(sqlite *db){
int i;
for(i=0; i<N_HASH; i++){
Table *pNext, *pList = db->apTblHash[i];
db->apTblHash[i] = 0;
while( pList ){
pNext = pList->pHash;
pList->pHash = 0;
sqliteDeleteTable(db, pList);
pList = pNext;
}
HashElem *pElem;
Hash temp1;
temp1 = db->tblHash;
sqliteHashInit(&db->tblHash, SQLITE_HASH_STRING, 0);
sqliteHashClear(&db->idxHash);
for(pElem=sqliteHashFirst(&temp1); pElem; pElem=sqliteHashNext(pElem)){
Table *pTbl = sqliteHashData(pElem);
sqliteDeleteTable(db, pTbl);
}
sqliteHashClear(&temp1);
db->flags &= ~SQLITE_Initialized;
}